EP0897027B1 - Métier à tricoter rectiligne comportant des platines mobiles à former des boucles - Google Patents

Métier à tricoter rectiligne comportant des platines mobiles à former des boucles Download PDF

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Publication number
EP0897027B1
EP0897027B1 EP98306399A EP98306399A EP0897027B1 EP 0897027 B1 EP0897027 B1 EP 0897027B1 EP 98306399 A EP98306399 A EP 98306399A EP 98306399 A EP98306399 A EP 98306399A EP 0897027 B1 EP0897027 B1 EP 0897027B1
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EP
European Patent Office
Prior art keywords
loop forming
movable
needle
movable loop
forming plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98306399A
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German (de)
English (en)
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EP0897027A3 (fr
EP0897027A2 (fr
Inventor
Masahiro Shima
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Shima Seiki Mfg Ltd
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Shima Seiki Mfg Ltd
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Publication date
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Publication of EP0897027A2 publication Critical patent/EP0897027A2/fr
Publication of EP0897027A3 publication Critical patent/EP0897027A3/fr
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Publication of EP0897027B1 publication Critical patent/EP0897027B1/fr
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/02—Loop-transfer points
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/06—Sinkers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/10—Needle beds
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines
    • D04B15/362—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/70—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used in flat-bed knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/02—Auxiliary apparatus or devices for use with knitting machines with weft knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/04—Flat-bed knitting machines with independently-movable needles with two sets of needles

Definitions

  • the present invention relates to a flat knitting machine having at least a pair of a front needle bed and a back needle bed, said flat knitting machine is provided with movable loop forming plates between needles, said movable loop forming plate is provided with a loop forming edge that faces the opening between both the front and back needle beds on the trick gap side of the needle bed and said movable loop forming plate can be moved forward and backward between an advanced position in which the loop forming edge is advanced the most towards the opening between both the front and back needle beds and a retracted position in which the loop forming edge is retracted the most.
  • a knitting method is disclosed in Japanese Patent Hei 3-75656, that is used when, on a flat knitting machine with two beds wherein a pair of needle beds are arranged to oppose, one in the front and the other in the back, a tubular fabric is formed with a front fabric and a back fabric being connected with each other at both ends thereof.
  • needles for forming the front fabric and needles for forming the back fabric are arranged alternately on the needle bed, and knitting is made under a condition that only one needle, of the pair of opposing front and back needles, is holding a loop.
  • every other needle of the front needle bed is used to knit the front fabric
  • every other needle of the back needle bed is used to knit the back fabric
  • empty needles, that are arranged between the every other needle for forming loops are used to transfer loops between the front and back needle beds
  • a tubular fabric is shaped; thus a fabric called an unsewn knit can be knitted by connecting shaped fabrics in the course of knitting to eliminate or significantly reduce the need of sewing steps after the completion of knitting.
  • knitting of the front fabric and of the back fabric is effected by using every other needle on the needle bed. In the present specification, this is called half knitting.
  • Japanese Provisional Patent Hei 7-258945 discloses a flat knitting machine having a pair of a front and back needle beds wherein a first needle and a second needle are arranged between a pair of adjacent sinker plates and the first needle is used to knit a front fabric and the second needle is used to knit a back fabric.
  • a sinker plate is provided for every two needles, hence, even when half knitting is made, no sinker loop is subjected to effects of two sinker plates. Thus half knitting can be made while the balance between sinker loop and needle loop is prevented from being upset.
  • the flat knitting machine that is disclosed in Japanese Provisional Patent Hei 7-258945 is arranged to keep the balance between needle loop and sinker loop by making half knitting. As a result, it poses a problem of irregular spacing between wales in full knitting.
  • the present invention provides a flat knitting machine having at least a pair of needle beds, each holding a plurality of needles held slidably in needle grooves formed on said needle beds, said needle beds abutting with each other, at top ends of said needle beds, leaving an opening between the top ends, and at least one of said needle beds being slidable sideways, wherein said needles are slidable to and away from said opening, characterized in that
  • said movable loop forming plates are sunk partly in grooves formed on bottoms of the needle beds facing the opening, wherein said movable loop forming plates are supported by said grooves and free to rock so as to advance towards and retract from the opening according to the control of said control means.
  • said movable loop forming plates comprise a first kind of movable loop forming plates and a second kind of movable loop forming plates, each kind being plural,
  • said movable loop forming plates are provided to one of every two of said needles, and fixed loop forming plates are provided to remaining needles so that both half knitting, wherein the loop forming edges of the movable loop forming plates are advanced towards the opening so as to feed every other needle with yarn, and full knitting, wherein the loop forming edges of the movable loop forming plates are retracted from the opening so as to feed each needle with yarn, are enabled.
  • both full knitting and half knitting may be made while the balance between sinker loop and needle loop is prevented from being disturbed.
  • a plurality of movable sinker plates are provided so that each of said movable sinker plates is overlapped with one of said movable loop forming plates,
  • said control means moves adjustably said movable loop forming plates towards the opening to one of plural positions.
  • said difference in sinker loop length between different knitted structures is reduced, abrupt changes in texture between different knitted structures and undesired changes in texture are prevented; thus fabrics of higher market value are knitted.
  • the knock-over timing can be adjusted. As a result, a fabric of the desired texture or feeling can be knitted.
  • said, loop forming edges are pressed by pressing members so as to move away from a center of said opening, and wherein said control means makes said loop forming plates move towards the center of said opening against the press by the pressing members.
  • the pressing members prevent the movable loop forming plate from advancing beyond the center of the opening between the needle beds, and this in turn, prevents interference between the movable loop forming plate and any needle or loop forming plate at the top end of the opposing needle bed.
  • the positions of the loop forming edges when the movable loop forming plates are advanced can be aligned.
  • said bottoms of the needle beds facing the opening are provided with fulcrums for the rocking motion of the movable loop forming plates
  • the present invention performs both half knitting and full knitting while preventing the balance, in size, between sinker loop and needle loop from being disturbed.
  • the balance in sinker loop length between a knitted structure that uses only one of the front and back needle beds and a knitted structure that uses both the front and back needle beds can be adjusted without altering the mounting position of any needle bed.
  • a desired texture or feeling can be realised by controlling the position of the movable loop forming edge according to the properties of a yarn used in knitting and other knitting conditions, and in turn, adjusting the amount of push-out of the sinker loop.
  • knit operation or miss operation will be described by way of example.
  • the present invention can be implemented on a conventional flat knitting machine that has transfer function and tuck knitting function.
  • a yarn portion that extends between needle loops is called a sinker loop, irrespective of single bed knit structure and double beds knit structure.
  • Fig. 1 is a plan view of the needle bed at the time of half knitting
  • Fig. 2 is a sectional view along the line X-X of Fig. 1, and Fig. 2-B and Fig.
  • FIGS. 2-C are diagrams showing the movable loop forming plates and the movable loop forming plate control members that are extracted from Fig. 2-A.
  • Fig. 3 is a diagram that shows the cam unit and the loci of butts. It should be noted that in Fig. 1 and Fig. 3 needle plates and movable loop forming plates are cut away for easier comprehension.
  • needle plates 7 are provided in grooves 5 that are made in a needle bed base 3 at regular intervals.
  • a needle 11 is held in such a way that it can slide or move forward or backward in a concave needle groove 9 that is composed of sides of a pair of adjacent needle plates 7, 7 and the top of the needle bed base 3.
  • a pair of needle beds 1, are arranged to oppose to each other, one in the front and the other in the back, with the top ends of the needles 11 of one bed being close to those of the other bed.
  • the first movable loop forming plate 15a and the second movable loop forming plate 15b are alternately arranged between needles on the top ends of the needle beds 1, on the trick gap side, over the entire longitudinal lengths of both the front and back needle beds 1, 1.
  • the front and back needle beds 1, are symmetrical, and only one needle bed will be described.
  • the movable loop forming plates 15a, 15b are formed on the trick gap side of the needle bed, and these plates face a center C-C of an opening (trick gap) between both the front and back needle beds.
  • the movable loop forming plate 15a, 15b has a loop forming edge 17a, 17b, an axis hole 21 and a curved elastic leg 23, and is swingably mounted in a groove 24 at the top end of the needle bed.
  • the loop forming edge 17a, 17b has a push-out action onto a yarn spanning needles.
  • the axis hole 21 is supported by a wire 19 that is put through in the needle bed 1 in the longitudinal direction thereof, and serves as the swing fulcrum for the movable loop forming plate 15a, 15b.
  • a concave 25 at the top end of the elastic leg 23 is engaged with a wire 27 that is mounted on the needle bed in the longitudinal direction thereof; thus the loop forming edge 17a, 17b is energized in a direction that the loop forming edge 17a, 17b moves back from the center C-C of the opening between the front and back needle beds.
  • the swing fulcrums of the movable loop forming plates are provided on the bottom of the needle bed on the trick gap side, and the loop forming edges 17a, 17b are made to swing to move forward or backward in the direction of forward or backward movement of the needle 11.
  • the pressing members for energizing the movable loop forming blades 15a, 15b in the direction of moving back from the trick gap are provided on the bottom of the needle bed, there is no need of providing any pressing members on the top of the needle bed or in the pull-down route of a fabric.
  • the first and second movable loop forming plates 15a, 15b contact the first and second movable loop forming plate control members 29a, 29b on which butts are provided in different positions at their back ends.
  • a movable loop forming plate control member When a movable loop forming plate control member is moved forward or backward, the first or the second movable loop forming plate will be moved forward to or backward from the center C-C of the opening.
  • the control members 29a, 29b are mounted above slider control jacks 31 of needles 11 that will be described later, in such a way that the control members 29a, 29b can slide forward or backward.
  • a retainer 35 is mounted in a dovetailed groove 33 that is formed in the needle bed 1 in the longitudinal direction thereof. As a result, the control members 29a, 29b will not come out of needle grooves and will be retained there while they can slide forward or backward.
  • the first movable loop forming plate 15a is provided with a linear loop forming edge 17a that is formed at the top end thereof, and the second movable loop forming plate 15b is provided with a concave loop forming edge 17b.
  • the control member 29a is provided with a control butt 37a.
  • the second control member 29b is provided with a control butt 37b in a position behind that of the first movable loop forming plate control member.
  • 39, 41 denote regulating pieces that limit the movable ranges of the control members 29a, 29b, respectively.
  • the first movable loop forming plate 15a and the second movable loop forming plate 15b are provided in such a way that the loop forming edge 17a of the first movable loop forming plate 15a in its most retracted position and the backmost part, in the direction of forward/backward movement of the needle, of the loop forming edge 17b of the second movable loop forming plate 15b in its most advanced position overlap with each other when seen from the side.
  • the control members 29a, 29b are curved leftward at their top ends, and their top ends contact the movable loop forming plates 15a, 15b.
  • the needle 11 of the flat knitting machine of the present embodiment is composed of a needle body 53, a slider 43, and a slider control jack 31.
  • the needle body 53 slidably holds the slider 43 in a groove 45, and a connecting concave 51 in the back end of the needle body 53 is connected with a connector 49 of a selection jack 47.
  • a hook 54 is formed on the needle body 53 at the top end thereof.
  • the slider 43 is provided with a loop holding part 55 at the top end thereof and a control butt 57 in the rear thereof.
  • the slider control jack 31 is integrally connected with the slider 43, and is provided with a control butt 59 in the rear thereof.
  • a control butt 63 is provided on the top face of the selection jack 47.
  • the control butt 63 When the control butt 63 is pressed by a presser that is provided on a carriage 61 but is not illustrated, the control butt 63 will be pushed into the needle groove in which it will not engage with a knitting cam 93.
  • the selection jack 47 is selected for knit or miss by a well-known selecting means not illustrated.
  • 67 is a wire that fixes the needle bed base 3 and needle plates 7 together
  • 69 is a wire that holds selection jacks in needle grooves.
  • All the needles 11 used in the following embodiments are of the same construction. However, for convenience of description, in Fig. 1, the needle 11a, that is arranged to the left of the first movable loop forming plate 15a and is advanced at the time of half knitting, is expressed as the first needle.
  • the needle 11b that is arranged to the left of the second movable loop forming plate 15b and is held in the retracted position at the time of half knitting is expressed as the second needle.
  • the cam unit 71 of the flat knitting machine of the first embodiment is shown in Fig. 3.
  • the arrow L in the diagram indicates the direction of the carriage.
  • Fig. 2-A shows the state of the needle bed along the line V-V of Fig. 3.
  • the butt 37a of the first control member 29a at the time of full knitting is indicated by a black butt
  • the butt 37b of the second control member 29 is indicated by a black butt.
  • the cam unit 71 that is mounted on a carriage 61 that reciprocates over the needle beds in the longitudinal direction, is provided with a movable loop forming plate control cam group that controls the first and second control members 29a, 29b, a slider cam group that controls the slider control jacks, and a knitting cam group that controls selection jacks.
  • These cams constitute, from above, a path for the first movable loop forming plate control member (I), a path for the second movable loop forming plate control member (II), a path for slider control jack (III), and a path for selection jack (IV).
  • the movable loop forming plate control cam group is composed of an upper cam 75, a middle cam 77 and a bottom cam 79 of fixed type, movable loop forming plate control cams 81a, 81b that move the first control member 29a forward or backward, and movable loop forming plate control cams 83a, 83b that move the second control member 29b forward or backward.
  • the slider control cam group is composed of a slider guide cam 85 and a pair of left and right slider cams 87a, 87b of fixed type.
  • the knitting cam group is composed of a center raising cam 89 and a guide cam 91 of fixed type, a pair of left and right knitting cams 93a, 93b that are arranged to be movable in the directions of the arrows, and other guide cams 95a, 95b, 97a, 97b.
  • the movable loop forming plates 15a, 15b operate in synchronization with the needle 11, and when the needle 11 is operated by stitch cams 93a, 93b to form a stitch loop, the movable loop forming plates 15a, 15b regulate the yarn to adjust the size of the sinker loop.
  • the movable loop forming plates act on plain stitch fabrics and hardly act on rib stitch fabrics. Since other features of the flat knitting machine of the present embodiment are common to conventional flat knitting machines, more detailed description will be omitted.
  • the action of the flat knitting machine of the present embodiment will be described.
  • the action for half knitting will be described.
  • the first movable loop forming plate 15a is controlled to be in an active position at which the plate 15a has a push-out action on a yarn 99
  • the second movable loop forming plate 15b is controlled to be in an inactive position at which the plate 15b has no push-put action on the yarn.
  • the first control cams 81a, 81b are controlled to be in active positions
  • the second control cams 83a, 83b are controlled to be in inactive positions.
  • the first movable loop forming plate 15a is controlled to be in an advanced position and the second loop forming plate 15b is controlled to be in a retracted position.
  • the first needle 11a is selected for knit, and the second needle 11b is selected for miss, and yarn is continuously fed to the first needles 11a to make half knitting.
  • the second needle lib is selected for miss, and the butt 63 of the selection jack 47 is pressed by a presser mechanism not illustrated into the needle groove, and as shown in Fig. 3, the second needle 11b travels without contacting the cam group.
  • the first needle 11a that is selected for knit, is raised by the center raising cam 89 to the topmost position, then it is lowered by the guide cam 91 and the knitting cam 93b of the trailing side.
  • the movable loop forming plates 15a, 15b are moved forward to or backward from the center C-C of the opening by control cams 81a, 83a being on the leading side relative to the carriage direction.
  • forward or backward movements of the movable loop forming plates 15a, 15b caused by the control cams 81a, 83a of the leading side are irrelevant to knitting.
  • only forward or backward movements caused by the control cams 81b, 83b of the trailing side are described.
  • the second movable loop forming plate 15b is in the inactive position, and the second movable loop forming plate 15b hardly has a push-out action on the yarn, and its construction is similar to that of the flat knitting machine disclosed in Japanese Provisional Patent Hei 7-258945 described in Prior Art. Hence knitting can be made while the balance between sinker loop and needle loop is prevented from being disturbed.
  • Fig. 4 is a plan view of the needle bed in full knitting.
  • Fig. 5 is a sectional view along the line Y-Y of Fig. 4.
  • Fig. 6 shows the cam unit and the loci of butts.
  • Fig. 5 shows the state when the line W-W of Fig. 6 is reached.
  • both the first movable loop forming plate 15a and the second movable loop forming plate 15b are controlled to be in active positions.
  • the first control cams 81a, 81b that move the first movable loop forming plate 15a forward or backward are controlled to be in inactive positions at which these cams 81a, 81b do not contact the control butt of the first movable loop forming plate 15a, and the second control cam 83b is controlled to be in an active position at which the cam 83b contacts the control butt of the second movable loop forming plate 15b.
  • the first movable loop forming plate is controlled to be in a retracted position
  • the second loop forming plate is controlled to be in an advanced position.
  • Knitting is effected by the first and second needles while the loop forming edges of the first movable loop forming plate and the second movable loop forming plate overlap with each other when seen from the side.
  • the butts 63a, 63b of the selection jack 47 will contact the center raising cam 89, and the needle body 53 will be raised.
  • the slider 43 will be pushed by the needle body 53 to rise.
  • the butts 59a, 59b of the slider control jack 31 of the first and second needles 11a, 11b will contact the slider guide cam 87a, and any ascent beyond that will be limited.
  • the slider 43 will descend relative to the needle body 11, and the hooks 54 of the needles 11a, 11b will be opened.
  • the needles 11a, 11b are raised to the topmost positions by the center raising cam 89, then they are lowered by the guide cam 91 and the knitting cam 93b on the trailing side relative to the carriage direction.
  • the second movable loop forming plate 15b is made by the second movable loop forming plate control cam 83b to advance to the advanced position.
  • yarn 99 is fed into the hook 54 of the needle 11 by the yarn feeder that is travelling with the carriage 61.
  • the needles 11a, 11b will be lowered by the knitting cam 93b.
  • the first movable loop forming plate 15a is controlled to be in the retracted position
  • the second movable loop forming plate 15b is controlled to be in the advanced position
  • the loop forming edges of the first and second movable loop forming plates are controlled to be in positions at which they overlap with each other when seen from the side.
  • the yarn 99 is pulled in by the needles 11a, 11b, and the amount of push-out of the sinker loop by the first movable loop forming plate 15a and that by the second movable loop forming plate 15b are equal; thus loops having an equal sinker loop length are formed by the first and second needles 11a, 11b.
  • loop forming edges facing the center C-C of the opening between both the front and back needle beds are formed on both needle beds on the trick gap side thereof.
  • Movable loop forming plates 15a, 15b are supported by fulcrums provided on the needle bed near the bottom of the trick gap so that the plates 15a, 15b swing in the grooves 24 formed in the needle bed at the top end on the trick gap side between the advanced position at which the loop forming edges 17a, 17b are advanced most towards the center of the opening between both the front and back needle beds and the retracted position at which the loop forming edges 17a, 17b are retracted most.
  • the movable loop forming plates 15a, 15b when the movable loop forming plates 15a, 15b are moved forward or backward, the loci of the forward/backward movements of the loop forming edges 17, 17b can be easily realized in a direction along the forward/backward movement of the needles that is the optimal direction for pushing out the sinker loop.
  • the swing fulcrums of the movable loop forming plates 15a, 15b are provided on the needle bed at the bottom of the trick gap, and the plates 15a, 15b are held so that they can swing in the grooves 24 formed in the needle bed on the trick gap side, the movable loop forming plates 15a, 15b can be provided without generating any structure that may hinder knitting on the needle beds or in the pull-down loci of fabrics.
  • both half knitting and full knitting can be made while the balance between sinker loop and needle loop is prevented from being disturbed.
  • the most retracted position of the first movable loop forming plate 15a and the most advanced position of the second movable loop forming plate 15b are the same position, and the travel ranges of the first movable loop forming plate 15a and the second movable loop forming plate 15b are made to differ from the advancing direction of the needle.
  • the first movable loop forming plate are arranged to be active in both the advanced position and the retracted position, and the second movable loop forming plate is arranged to be active in the advanced position and is inactive in the retracted position. In this way, the amount of travel of each movable loop forming plate control member is reduced.
  • the above-mentioned arrangement is not essential.
  • the advanced positions of both the first and second movable loop forming plates 15a, 15b may be set at the most advanced position of the first movable loop forming plate, and the retracted positions of both the plates 15a, 15b may be set at the most retracted position of the second movable loop forming plate, and at the same time, the amount of advancement of the movable loop forming plate control cam is made adjustable. Then actions and inaction of the first and second movable loop forming plates 15a, 15b can be switched over.
  • the retracted position of the second movable loop forming plate 15b is set at a position at which the yarn 99 contacts the loop forming edge 17b of the second movable loop forming plate 15b.
  • the loop forming edge 17b has a slight push-out action on the yarn.
  • the loop forming edge 17b of the second movable loop forming plate 15b can be retracted to a position at which the edge 17b does not contact the yarn 99 at all.
  • knitting is done by controlling so that the loop forming edges 17a, 17b of the first movable loop forming plate 15a and the second movable loop forming plate 15b come to the same position when seen from the side.
  • knitting may be done by controlling the loop forming edge 17a of the first movable loop forming plate 15a and the loop forming edge 17b of the second movable loop forming plate 15b to be in different positions.
  • movable loop forming plates 15a, 15b of which loop forming edges differ from each other in configuration are used as the first and second movable loop forming plates.
  • movable loop forming plates of which loop forming edges are identical to each other in configuration may be used as the first and second movable loop forming plates.
  • a second embodiment will be described.
  • a movable loop forming plate 101 of a single kind and a fixed type loop forming plate 103 are alternately arranged between needles.
  • one object is to make both half knitting and full knitting while the balance between sinker loop and needle loop is prevented from being disturbed. Since the basic configurations of the second and subsequent embodiments are common to that of the first embodiment, parts identical to those of the first embodiment will be described with the same marks that were used in the first embodiment.
  • a side view of a flat knitting machine of the second embodiment is shown in Fig. 7.
  • Fig. 7-A is a sectional view of a needle bed 105 of the flat knitting machine of the second embodiment.
  • FIG. 7-B and Fig. 7-C are diagrams showing the fixed loop forming plate 103, the movable loop forming plate 101, and a movable loop forming plate control member 107 that are extracted from Fig. 7-A.
  • Fig. 8 shows a cam unit 108 for half knitting
  • Fig. 9 shows a cam unit for full knitting.
  • the movable loop forming plate 101 and the fixed type loop forming plate 103 are alternately arranged between needle grooves.
  • the movable loop forming plate 101 is provided with a loop forming edge 129, and this edge 129 has the same configuration as the loop forming edge 17a of the first movable loop forming plate 15a used in the first embodiment.
  • the most retracted position of the movable loop forming plate 101 is set behind the most retracted position of the first movable loop forming plate 15a of the first embodiment.
  • the fixed type loop forming plate 103 is provided with a loop forming edge 109, and this edge 109 has the same configuration as the loop forming edge 17b of the second movable loop forming plate 15b used in the first embodiment.
  • the fixed type loop forming plate 103 is set at the same position as the most retracted position of the second movable loop forming plate of the first embodiment.
  • the movable loop forming plate 101 is operated to move forward or backward through a butt 110 of the control member 107 that engages with the cam unit 108.
  • the fixed type loop forming plate 103 is fixed by engaging its concaves 113, 119 with wires 111, 117 that are mounted on the needle bed in the longitudinal direction thereof.
  • a spacer 120 is mounted between the top of a needle 125 and a retainer 122.
  • a latch needle 125 In the second embodiment, a case of using a latch needle 125 will be described. A hook 123 of this latch needle 125 is opened or closed by turning a latch 121.
  • the compound needle that was used in the first embodiment, can be used as well. In other embodiments of the present invention, both latch needle and compound needle can be used.
  • the cam unit of the second embodiment is prepared by, as shown in Fig. 8 and Fig. 9, omitting cams for moving forward or backward the second movable loop forming plate and cams for slider control from the cam unit 71 of the first embodiment, and providing movable loop forming plate control cams 127a, 127b of which strokes are extended than that of the first movable loop forming plate control cam.
  • Fig. 8 shows the cam unit in half knitting
  • Fig. 9 shows the cam unit in full knitting.
  • the movable loop forming plate control cams 127a, 127b are controlled to be in active positions, and the loop forming edge 129 of the movable loop forming plate 101 is controlled to be in an advanced position more advanced than the loop forming edge 109 of the fixed loop forming plate 103. Then, the first needle is selected for knit, and the second for miss. Yarn is fed to every other first needle to knit. Since the fixed loop forming plate 103 is at the same position as the most retracted position of the second movable loop forming plate 15b of the first embodiment, the push-out of the loop by the fixed loop forming plate 103 is slight.
  • the yarn fed to the first needles can be formed into stitches while the balance between sinker loop and needle loop is prevented from being disturbed.
  • the movable loop forming plate control cams 127a, 127b are controlled to be in inactive positions, and the movable loop forming plat 101 is controlled to be in a retracted position that is an active position. Then, knitting can be made with the loop forming edge 129 of the movable loop forming plate 101 and the loop forming edge of the fixed loop forming plate 103 overlapping with each other when seen from the side. By this, the amount of push-out of sinker loop by the movable loop forming plate 101 and that by the fixed type loop forming plate 103 are equalized. Thus loops of the same sinker loop length are formed by the first and second needles.
  • Fig. 10-A is a sectional view of a needle bed 203 of a flat knitting machine of the third embodiment.
  • Fig. 10-B is a diagram showing a movable loop forming plate 201 and a control member 205 that are extracted from Fig. 10-A.
  • the movable loop forming plate 201 of a single kind is arranged between all needles.
  • this embodiment is used to knit while the loop balance between the single bed knit structure portion and the double beds knit structure portion is prevented from being disturbed.
  • the movable loop forming plate 201 and the movable loop forming plate control member 205 that are used in the present embodiment have construction common to that of the movable loop forming plate 101 and the movable loop forming plate control member 107 of the second embodiment.
  • the cam unit that is used in the third embodiment has construction common to that of the cam unit 108 of the second embodiment. Hence, in the following description, marks used in the second embodiment will be used .
  • the movable loop forming plate control cams 127a, 127b are controlled to be, for example, in inactive positions.
  • sinker loops of a single bed knit structure are made smaller relatively.
  • the control cams 127a, 127b are controlled to be in active positions.
  • the movable loop forming plate hardly contact sinker loops. The movable loop forming plate is effective only in a single bed knit structure. As a result, sinker loops of the single bed knit structure are made longer relative to the double beds knit structure; thus the difference in sinker loop length between different structures is reduced.
  • the amounts of movement of the control cam 127a, 127b and the control member 205 can be varied in multiple stages rather than in two stages of 0/1 and that the position of the movable loop forming plate is adjusted according to the knitting conditions such as the property of the yarn to be used in knitting.
  • the knock over timing when the yarn is knocked over from a needle can be adjusted by changing the position of the movable loop forming plate.
  • Fig. 11-A is a plan view of a needle bed 301 of a flat knitting machine of the fourth embodiment.
  • Fig. 11-B is a sectional view along the line Z-Z of Fig. 11-A.
  • Fig. 11-C is a diagram showing a movable sinker plate 303 that is extracted from Fig. 11-A.
  • Fig. 11-D is a diagram showing a movable loop forming plate 305, a movable loop forming plate control member 307 and a retainer 309.
  • the well-known movable sinker plate 303 that prevents rising of an old loop together with rising of a needle, and the movable loop forming plate 305 are provided in layers at the top end of the needle bed.
  • the movable sinker plate 303 is held in a groove formed in the needle plate 311, with a J-shaped leg 315 serving as the fulcrum.
  • the plate 303 is energized by a spring 319 that engages with a holder 317 of the movable sinker plate 303, in a direction that the plate 303 pushes a loop into the trick gap between the front and back needle beds.
  • a pair of control butts 321a, 321b for swing control, one in the front and one in the back, are formed on the top of the movable sinker plate 303.
  • the movable sinker plate 303 is swingably retained by mounting a retainer 325 in a groove 323 that is formed in the needle bed in the longitudinal direction thereof between the control butts 321a, 321b.
  • the top end 329 of the movable sinker plate 303 is made to swing in a groove 333 formed in the needle plate base 331.
  • An end 337 of the movable loop forming plate is bent towards the needle groove, and the back end is positioned in the needle groove, and the movable loop forming plate is controlled to move forward or backward by the movable loop forming plate control member 307 mounted in the needle groove.
  • the movable loop forming plate 305 makes a U-shaped portion 305, that is formed on one end thereof, contact the bottom 339 of the needle bed. With this arrangement, the loop forming edge 341 is energized in a direction that the loop forming edge 341 advances towards the center of the opening between both the front and back needle beds.
  • a concave 343 In the middle of the movable loop forming plate 305, is formed a concave 343 that uses a wire 347, that is put through in the longitudinal direction of the needle bed, as the swing fulcrum to hold the movable loop forming plate 305.
  • 345 is a wire that regulates the upward movement and the most retracted position of the movable loop forming plate 305 in the movable sinker groove 333.
  • the wire 347 is held by a retainer 351 that is spanned between the wires 345, 349 mounted on the bottom of the needle bed.
  • the cam unit of the present embodiment is the cam unit 108 of the second embodiment to which cams for controlling the well-known movable sinker are added.
  • the movable loop forming plate 305 and the movable sinker plate 303 are individually moved forward or backward according to the movement of the needle 353 to effect knitting.
  • rising of an old loop when the needle 353 rises is prevented by the movable sinker plate 303.
  • the movable sinker plate 303 is advanced towards the center of the opening between the front and back needle beds, the yarn that is in contact with the loop forming edge 341 of the movable loop forming plate 305 will be reliably caught by a yarn holder 327 of the movable sinker plate 303.
  • the function of the loop forming edge at the time of loop formation is concentrated in the movable loop forming plate.
  • the movable sinker plate can be designed to have a configuration and a movement locus that are suitable for pushing down the loop.
  • the working of the present invention were described by taking cases of two-bed flat knitting machines that are provided with only a pair of a front needle bed and a back needle bed.
  • the present invention can be worked on four-bed flat knitting machines that have a pair of lower needle beds, one in the front and one in the back, and an upper bed on each of lower beds.
  • these pressing members may be omitted.
  • the constructions of the knitting machines described in the embodiments indicate some examples of the embodiments of the present invention, and the present invention is not limited to the constructions indicated in the above-mentioned embodiments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (8)

  1. Métier à tricoter rectiligne ayant au moins une paire de lits d'aiguilles (1), supportant chacun une pluralité d'aiguilles maintenues à coulissement dans des rainures d'aiguilles (5) formées sur lesdits lits d'aiguilles, lesdits lits d'aiguilles s'appuyant l'un sur l'autre, aux extrémités supérieures desdits lits d'aiguilles, laissant une ouverture entre les extrémités supérieures, et au moins un desdits lits d'aiguilles pouvant effectuer un coulissement latéralement, dans lequel lesdites aiguilles peuvent effectuer un coulissement vers ladite ouverture et en sens inverse, ledit métier à tricoter rectiligne étant caractérisé
    en ce que lesdits lits d'aiguilles (1) sont munis d'une pluralité de platines mobiles formatrices de boucles (15a, b) qui peuvent être déplacées vers ladite ouverture et en sens inverse en parallèle avec lesdites aiguilles,
    en ce que chacune desdites platines mobiles formatrices de boucles est munie d'un bord formateur de boucles (17a, b) à une extrémité supérieure de la platine faisant face à l'ouverture, et
    en ce que ledit métier à tricoter rectiligne est muni de moyens de commande pour déplacer lesdites platines mobiles formatrices de boucles de sorte que lesdits bords formateurs de boucles se déplacent vers ladite ouverture et en sens inverse.
  2. Métier à tricoter rectiligne selon la revendication 1, caractérisé en ce que lesdites platines mobiles formatrices de boucles (15a, b) sont enfoncées partiellement dans des rainures formées sur les fonds des lits d'aiguilles faisant face à l'ouverture, lesdites platines mobiles formatrices de boucles étant supportées par lesdites rainures et libres de basculer de manière à avancer vers l'ouverture et à s'en retirer conformément à la commande desdits moyens de commande.
  3. Métier à tricoter rectiligne selon la revendication 1 ou 2, caractérisé en ce que
    lesdites platines mobiles formatrices de boucles (15a, b) comprennent un premier type de platines mobiles formatrices de boucles et un second type de platines mobiles formatrices de boucles, chaque type étant multiple,
    en ce que lesdits moyens de commande comprennent des premiers moyens de commande pour déplacer ledit premier type de platines mobiles formatrices de boucles vers l'ouverture et en sens inverse et des seconds moyens de commande pour déplacer ledit second type de platines mobiles formatrices de boucles vers l'ouverture et en sens inverse,
    de manière à effectuer sélectivement soit un demi-tricotage, dans lequel les bords formateurs de boucles dudit premier type de platines mobiles formatrices de boucles sont activés par lesdits premiers moyens de commande et les bords formateurs de boucles dudit second type de platines mobiles formatrices de boucles sont inactivés par lesdits seconds moyens de commande de manière à alimenter une desdites aiguilles sur deux en fil et, soit un tricotage complet, dans lequel les bords formateurs de boucles dudit premier type de platines mobiles formatrices de boucles et dudit second type de platines mobiles formatrices de boucles sont tous deux activés par lesdits premiers et seconds moyens de commande de manière à alimenter chacune desdites aiguilles en fil.
  4. Métier à tricoter rectiligne selon la revendication 1 ou 2, caractérisé en ce que
    lesdites platines mobiles formatrices de boucles sont acheminées à une desdites aiguilles sur deux et des platines fixes formatrices de boucles sont acheminées aux aiguilles restantes,
    de sorte que soient activés à la fois un demi-tricotage, dans lequel les bords formateurs de boucles des platines mobiles formatrices de boucles sont avancés vers l'ouverture de manière à alimenter une aiguille sur deux en fil, et un tricotage complet, dans lequel les bords formateurs de boucles des platines mobiles formatrices de boucles sont retirés de l'ouverture de manière à alimenter chaque aiguille en fil.
  5. Métier à tricoter rectiligne selon l'une quelconque des revendications précédentes, caractérisé
    en ce qu'une pluralité de platines cueillantes standard mobiles, sont installées de sorte que chacune desdites platines cueillantes standard mobiles soit chevauchée par l'une desdites platines mobiles formatrices de boucles,
    en ce que lesdites platines cueillantes standard mobiles sont munies, à leur extrémité supérieure, de moyens de maintien du fil pour maintenir le fil tendu entre des aiguilles et mobile vers l'ouverture et en sens inverse et empêcher des anciennes boucles maintenues par des aiguilles de se lever au cours du mouvement en avant des aiguilles, et
    en ce que chacun desdits moyens de maintien du fil et un bord formateur de boucles recouvert par celui-ci sont amenés à se croiser mutuellement par le mouvement en avant/arrière de la platine cueillante standard mobile et le mouvement en avant/arrière de la plaque mobile formatrice de boucles.
  6. Métier à tricoter rectiligne selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens de commande déplacent de manière réglable lesdites platines mobiles formatrices de boucles vers l'ouverture de l'une des multiples positions.
  7. Métier à tricoter rectiligne selon la revendication 2, dans lequel lesdits bords formateurs de boucles sont pressés par des éléments presseurs de manière à les éloigner d'un centre de ladite ouverture, et dans lequel lesdits moyens de commande amènent lesdites platines formatrices de boucles à se déplacer vers le centre de ladite ouverture à l'encontre de la pression desdits éléments presseurs.
  8. Métier à tricoter rectiligne selon la revendication 7, caractérisé
    en ce que lesdits fonds des lits d'aguilles faisant face à l'ouverture sont munis de pivots pour le mouvement basculant des platines mobiles formatrices de boucles,
    en ce que chacun desdits éléments presseurs est configuré par une jambe élastique dans chacune desdites platines formatrices de boucles et s'étendant d'un desdits pivots à l'opposé du bord formateur de boucles de chacune desdites platines formatrices de boucles, et
    en ce que ladite jambe élastique est en contact avec le fond du lit d'aiguilles supportant chacune desdites platines formatrices de boucles.
EP98306399A 1997-08-11 1998-08-11 Métier à tricoter rectiligne comportant des platines mobiles à former des boucles Expired - Lifetime EP0897027B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP216234/97 1997-08-11
JP21623497 1997-08-11
JP09216234A JP3140990B2 (ja) 1997-08-11 1997-08-11 可動ループ形成プレートを備えた横編機

Publications (3)

Publication Number Publication Date
EP0897027A2 EP0897027A2 (fr) 1999-02-17
EP0897027A3 EP0897027A3 (fr) 2000-03-15
EP0897027B1 true EP0897027B1 (fr) 2003-10-29

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EP98306399A Expired - Lifetime EP0897027B1 (fr) 1997-08-11 1998-08-11 Métier à tricoter rectiligne comportant des platines mobiles à former des boucles

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US (1) US6079233A (fr)
EP (1) EP0897027B1 (fr)
JP (1) JP3140990B2 (fr)
KR (1) KR100478553B1 (fr)
CN (1) CN1133764C (fr)
DE (1) DE69819253T2 (fr)
ES (1) ES2205387T3 (fr)
TW (1) TW455637B (fr)

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CN109440283B (zh) * 2018-12-17 2023-09-22 宁波博日机械有限公司 一种双系统横机底板及控制方法
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Also Published As

Publication number Publication date
CN1208086A (zh) 1999-02-17
KR100478553B1 (ko) 2005-08-31
JP3140990B2 (ja) 2001-03-05
DE69819253D1 (de) 2003-12-04
EP0897027A3 (fr) 2000-03-15
EP0897027A2 (fr) 1999-02-17
US6079233A (en) 2000-06-27
TW455637B (en) 2001-09-21
ES2205387T3 (es) 2004-05-01
JPH1161604A (ja) 1999-03-05
DE69819253T2 (de) 2004-07-15
KR19990023497A (ko) 1999-03-25
CN1133764C (zh) 2004-01-07

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